So I had a professional electrician buddy look at the wiring diagram for my car. He said the only way the fuel pump could run with the fuse out is the fuel pump monitor circuit is back feeding power to the pump. That makes sense looking at the diagram and might explain why the old CCRM smoked since that circuit isn't designed for the full draw of a fuel pump. It looks like pin 8 on the CCRM feeds the fuel pump monitor circuit but why would it be feeding power with the key in my pocket?
Um, did you not see my post
here?
Are you sure it's pin 8 on the CCRM? You have confirmed this on your year wiring diagram? I don't believe that is correct according to my manual, though I have a different year car, so perhaps it changed from year-to-year (and I will confirm tonight when I get home as I am at work). I honestly don't know without seeing a wiring diagram for your year. Also, the monitor "informs" the EEC - it is not directly responsible for supplying power to the fuel pump relay.
How do you know pin 8 is supplying power with the keys in your pocket? Did you probe with a multimeter? (And keep in mind pin 8 on the CCRM may not be what you think it is, so maybe it's normal for this circuit to have power.)
Lastly, I would be surprised if your new pump is the sole reason the CCRM burned up. I seriously doubt this - the fuel pump is protected by a 20 Amp fuse, if your pump was drawing more current than that, it would have popped the fuse. If your CCRM was fried
*and* the fuse popped, then yes, your pump might have done it. The Aeromotive unit, at 1 atmo, is probably drawing around 11 Amps (
source). Your stock wiring is certainly up to that task. Now, if you were pushing 30 lbs of boost and asking the pump to supply the fuel,
*THEN* maybe your wiring isn't quite large enough (but even then the pump would be drawing around 17 Amps, still within the limits as set by Ford via a 20 Amp fuse). Certainly for KOEO, your wiring is fine.
Unless your pump is defective, something else is your problem.
Edit: and for reference, I too have the wiring diagrams for my car, as well as the service manuals (FSMs = Factory Service Manuals). I use them quite often. So while the info I provide may be specific to my car - I can't know for your car because I only have the manuals for my year - I am certainly not pulling them out of my ass. I know how to read wiring diagrams. I do this often. Sometimes I am even good at it